The is a two-port, 180° surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency oscillators operating at or near 905.8 MHz. This resonator is designed specifically for use in the local oscillator of 916.5 MHz superheterodyne receivers operating in the USA under FCC Part 15.249 and in Canada under DoC It is also suitable for a variety of other oscillator applications.

1. Frequency aging is the change in fC with time and is specified +65°C or less. Aging may exceed the specification for prolonged temperatures above +65°C. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years. 2. The frequency C is the frequency of minimum IL with the resonator in the specified test fixture a 50 test system with VSWR 1.2:1. Typically, fOSCILLATOR or fTRANSMITTER is less than the resonator fC. 3. One or more of the following United States patents apply: 4,616,197. 4. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufacturer. 5. Unless noted otherwise, case temperature 2°C 6. The design, manufacturing process, and specifications of this device are subject to change without notice. 7. Derived mathematically from one or more of the following directly measured parameters: fC , IL, 3 dB bandwidth, fC versus TC, and CO. 8. Turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fO. The nominal frequency at any case temperature, TC , may be calculated from: [1 - FTC (TO - TC)2]. Typically, oscillator is 20° less than the specified resonator TO. 9. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance CO is the measured static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. The measurement includes case parasitic capacitance.

This two-port, three-terminal SAW resonator is bidirectional. However, impedances and circuit board parasitics may not be symmetrical, requiring slightly different oscillator component-matching values.

The following equivalent LC model is valid near resonance:
Connection Input or Output or Input Case Ground

The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions.

The plot shown below is a typical frequency response for the RP series of two-port resonators. The plot is for RP1094.

This SAW resonator can be used in oscillator or transmitter designs that require 180° phase shift at resonance in a two-port configuration. Oneport resonators can be simulated, as shown, by connecting pins 1 and 2 together. However, for most low-cost consumer products, this is only recommended for retrofit applications and not for new designs. Conventional Two-Port Design: Simulated One-Port Design:

525-03 : . ICS525-03 PECL Input OSCaRTM User Configurable Clock The ICS525-03 OSCaRTM is the most flexible way to generate a high quality, high accuracy, high frequency clock output from a PECL clock input. The name OSCaR stands for OSCillator Replacement, it is designed to replace crystal oscillators in almost any electronic system. The user can easily configure.

MC10E111FNR2 : 5V Ecl 1:9 Differential Clock Driver, Package: Plcc, Pins=28. The is a low skew 1-to-9 differential driver, designed with clock distribution in mind. It accepts one signal input, which can be either differential or else single-ended if the VBB output is used. The signal is fanned out to 9 identical differential outputs. An enable input is also provided. A HIGH disables the device by forcing all Q outputs LOW and all Q outputs.